INDUSTRIAL CROPS AND PRODUCTS
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2014
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IF 3.208
Xuejuan Yang,Shouhai Li,Jianling Xia,Jian Song,Kun Huang,Mei Li
Two novel ultraviolet (UV)-curable vinyl ester resin (VER) monomers derived from myrcene and tung oil were synthesized via Diels–Alder reaction, glycidylation reaction and ring-opening esterification. Their chemical structures were confirmed by Fourier transform-infrared analysis (FTIR) and Proton nuclear magnetic resonance ( 1 H NMR). Then the two VER monomers were mixed at different weight ratios and cured under UV light. The curing processes were monitored by FTIR analysis. Tensile and flexural properties of the cured resins were also tested. The conversion rate of double bond exceeded 80% within 60 s and the final conversion rate was 95%. Tensile and flexural tests indicated that the rigidity–flexibility was balanced in the cured systems when the mixed resins contained 50–70 wt% of myrcene-based VER monomer. Dynamic mechanical analysis demonstrated that the storage modulus and glass transition temperatures of the cured resins increased with the increasing content of myrcene-based VER monomer. The crosslinking density of the cured copolymers also increased with the increasing content of myrcene-based VER monomer. Thermogravimetric analysis (TGA) showed that the main thermal initial decomposition temperatures ( T i ) of the cured copolymers were all above 388 °C. All the results demonstrated that comparable balanced properties could be obtained by mixing these two bio-based monomers together.
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Advanced Optical Materials
·
2022
·Vol. 11
·期 3
·2202195
·
IF 10.05
Xiaojing Li,Zilong Chen,Fuming Li,Fangfang Zhang,Zhihua Yang,Shilie Pan
A long-lasting challenge in ultraviolet (UV) nonlinear optical (NLO) materials design is to combine conflicting and harsh properties into one structure, including wide UV transparency, strong NLO efficiency, and moderate birefringence to realize phase-matching at short wavelength. A fluorine-directed material design strategy is adopted to accelerate the process of finding NLO materials with optimal performances. In this work, taking LiB 3 O 5 (LBO) as a maternal structure, one O atom with two F atoms is substituted and LiNaB 6 O 9 F 2 which possesses novel double interpenetrating 3 [B 6 O 9 F 2 ] ∞ networks and fluorine-directed optimal performances including enhanced birefringence and phase-matching capacity is successfully obtained. The perfect balance among deep-UV cutoff edge, large second-harmonic generation (SHG) response (1.1 × KDP), and moderate birefringence (0.067 at 1064 nm) of LiNaB 6 O 9 F 2 makes it a promising UV NLO crystal.
研究领域:
材料科学
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晶体化学
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非线性光学
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功能材料
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固体化学
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MOLECULES
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2026
·Vol. 31
·期 2
·
IF 4.6
Xiaoyan He,Lisheng Tang,Ran Huang
With the growing demand for eco-friendly food packaging, poly(butylene adipate-co-terephthalate) (PBAT)/polylactic acid (PLA) composite films have emerged as promising biodegradable alternatives, but their inherent limitations (e.g., poor antioxidant capacity, weak UV stability, and insufficient antimicrobial activity) hinder practical applications. This study aimed to address these drawbacks by incorporatingRosmarinus officinalisL. extract (RM) as a natural multifunctional additive. PBAT/PLA/RM blend films with RM concentrations of 0.1%, 0.3%, 0.5%, and 1% were fabricated via melt extrusion and blown film processing. Key characterizations were conducted to evaluate thermal stability, mechanical properties, morphology, antioxidant activity, UV-shielding performance, antimicrobial efficacy, and biodegradability. The results showed that RM significantly enhanced the antioxidant capacity of the films, with the highest DPPH radical scavenging activity achieved at 0.3% RM. UV-blocking performance improved incrementally with increasing RM concentration, and films containing ≥0.5% RM filtered over 90% of UVA and UVB radiation. All composite films met biodegradability standards, with over 90% degradation observed after 240 days of composting, though RM prolonged the initial degradation stage by inhibiting early microbial activity. However, the antimicrobial effect of RM was limited, and concentrations exceeding 1% caused film stickiness, impeding processing. This work demonstrates that RM is a viable natural additive for functionalizing PBAT/PLA films, offering enhanced antioxidant and UV-shielding properties while maintaining biodegradability, thus providing a promising solution for sustainable food packaging.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Luan Fu,Lulu Du,Zheng Lu,Weizhong Tan,Xiaohui Shi,Li Lv,Pinhua Zhang,Guangliang Cui
The fabrication of micro/nano metal oxide semiconductor (MOS) heterostructures, employing bimetallic metal–organic frameworks (Bi-MOFs) as self-sacrificing templates, can significantly enhance the sensitivity of the resulting nanocomposite materials. Herein, ZnO/NiO heterostructures derived from Ni/Zn Bi-MOFs were fabricated, which achieved outstanding UV-assisted NO 2 -sensing performance at room temperature. Our experiments reveal a sensitive dependence of the sensing performance of ZnO/NiO heterostructures sensor on calcination temperature. The ZnO/NiO-600 sensor, which was calcined at 600 °C, demonstrated the best sensing performance, achieving 3-fold sensitivity enhancement over pure ZnO. Under UV irradiation, the response value to 1 ppm NO 2 reaches 6.78, with corresponding response and recovery times of 15 s and 40 s, respectively. Furthermore, the ZnO/NiO-600 sensor exhibits an exceptional detection limit as low as 20 ppb and a strong linear response within the range of 20 ppb–1 ppm (R 2 = 0.994). The excellent sensing performance can be attributed to the synergistic effect of several factors, including the mesoporous structure of MOF-derived MOS materials, the formation of ZnO/NiO heterostructures, and UV irradiation. This work provides a promising strategy for the development of a novel Bi-MOF-derived MOS heterosturcture that can be applied to photoelectric gas sensor.
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JOURNAL OF POLYMER SCIENCE
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2026
·
IF 3.9
Shenglin Zhou,Huifen Gu,Zhengyuan Cai,Baoqing Shentu,Meihong Pan
As the distribution of social resources becomes increasingly uneven, the demand for children healthcare has become increasingly prominent. Due to the unique advantages of conductive hydrogels, they are excellent candidates for children healthcare wearable devices. However, their conventional preparation often involves time-consuming processes and the usage of a toxic chemical initiator, posing an urgent challenge to fabricate multifunctional hydrogel-based sensors via a green and efficient approach. In this work, we utilized an initiator and crosslinker-free strategy stimulated by sunlight to fabricate the zwitterionic poly(sulfobetaine methacrylate- co -hydroxyethyl methacrylate) (P(SBMA- co -HEMA))-based composite hydrogel incorporating polyvinylpyrrolidone (PVP), phosphotungstic acid (PTA), and boric acid. The resulting SHPPB hydrogel exhibited tissue-like softness (Young's modulus ~10 kPa), favorable stretchability (up to 1449%), excellent resilience, reversible adhesion, outstanding antibacterial activity, and excellent biocompatibility. Moreover, benefited from the intrinsic conductivity and photochromic property of PTA, the as-prepared hydrogel can be utilized to detect daily physical activities of children and the intensity of the suffered ultraviolet radiation in real time, offering colorimetric indication for UV protection. This work provides a facile and green route to construct multifunctional hydrogel-based sensors with integrated sensing, antibacterial, and biocompatible properties, showing great potential for next-generation children healthcare wearable devices. Graphical A green and facile strategy was prepared in this work to fabricate high-performance hydrogel-based sensor; it is an initiator and crosslinker-free method stimulated by sunlight. The resulting hydrogel-based sensor exhibits tissue-like softness, excellent mechanical properties, outstanding antibacterial activity, and biocompatibility. Meanwhile, it broadens the application scope of zwitterionic hydrogels in children healthcare, particularly for pediatric protection and real-time physiological monitoring.
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Journal of Materials Chemistry C
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2026
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IF 5.1
Qing-Hua Zhao,Chang Sun,Wentao Huang,Xiaocong He,Kehong Wei,Lina Zhong,Xiaomin Zhao,Guohua Chen
High-quality optical filters that selectively attenuate harmful ultraviolet (UV) and high-energy blue light (HEBL, 400–450 nm), while maintaining high visible transparency, are critically important for health-conscious lighting. However, achieving such precise spectral selectivity remains challenging, as conventional blue-light filters often cause color distortion by fully eliminating blue emission. Herein, we report a molecular functionalization strategy to finely regulate the optical absorption of graphene quantum dots (GQDs) through covalent grafting of aminonitrobenzene derivatives. By systematically varying substituent configuration and donor density, the interfacial donor-acceptor coupling strength between the molecular moieties and the GQD π-conjugated framework is effectively modulated. Among the designed systems, DNP-GQDs bearing dual-amino nitrobenzene groups exhibit markedly enhanced and selective absorption in the UV and HEBL regions. Owing to their excellent water solubility, DNP-GQDs are embedded in poly(vinyl alcohol) (PVA) to fabricate transparent DNP-GQDs/PVA films. An optimized film containing 0.5 wt% DNP-GQDs achieves nearly complete shielding of UV and HEBL, while retaining high visible-light (> 540 nm) transmittance exceeding 80%. Importantly, under white light-emitting diode (WLED) illumination, the films enable controlled spectral reshaping, shifting chromaticity coordinates from (0.3066, 0.3247) to (0.3653, 0.4070), corresponding to a transition from cool to warm white light with acceptable color rendering. This work establishes a clear molecular structure-electronic interaction-optical response relationship and provides a general strategy for designing spectrally selective nanocarbon-based optical filters for advanced lighting applications.
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ELECTROPHORESIS
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2026
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IF 2.6
Shiyun Hu,Xiao Hu,Kun Chen,Yingying Liu,Yingying Deng,Lishuang Yu,Lu Huang
A chiral packed capillary column (PCC) was prepared by a photonic crystal fiber (PCF) as the frit and cellulose tris(3,5-dimethylphenylcarbamate)-coated silica particles (CDMPC@SiO 2 ) as the chiral stationary phase. This column coupled with UV detection was employed for the enantioseparation of chiral compounds derived from traditional Chinese medicines (TCMs). Baseline enantioseparation was achieved for schisandrin B and tetrahydropalmatine, whereas partial separation was observed for anisodamine and corynoxeine. The reproducibility and stability of the column were confirmed, with relative standard deviation (RSD) values for retention time and resolution ranging from 2.5% to 3.2% (intra-day), 2.7% to 3.5% (inter-day), and 4.1% to 4.5% (inter-column). Then, the column was successfully applied to the direct enantioseparation and quantitative determination of tetrahydropalmatine in the extract of Yanhusuo ( Corydalis Rhizoma ). These results demonstrate that the proposed chiral CDMPC@SiO 2 PCC is not only reproducible and stable but also can be effectively applied to the enantioseparation and content determination of chiral compounds in complex TCMs. Furthermore, density functional theory (DFT) calculations were conducted to investigate intermolecular interactions between CDMPC and chiral analytes, which provides a deeper understanding of the enantioseparation mechanism.
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Journal of Composites Science
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2026
·Vol. 10
·期 9
·447
·
IF 4.6
Guo-Xiang Zhou,Heng Pang,Xing-Ping Zhou,Chang Kong,Kuang Zhang,Zhi-Hua Yang,De-Chang Jia,Yu Zhou
Direct ink writing (DIW) is a promising additive manufacturing technique for flexible electronics; however, lateral spreading of conventional silver inks often limits printing resolution and geometric fidelity. To address this limitation, an in situ UV-assisted DIW strategy using photocurable silver inks was developed for the fabrication of high-resolution conductive features. The effects of Ag loading, TPO photoinitiator concentration, and dispersant type on the rheological behavior, photocuring response, and stability of the inks were systematically investigated. Excessive TPO concentrations were found to induce rheological instability, whereas an optimized formulation enabled a stable photocuring response. Among the dispersants investigated, AH100 provided the most favorable balance between ink flowability and controlled substrate wetting, thereby suppressing excessive lateral spreading. During printing, in situ UV irradiation rapidly promoted crosslinking of the resin matrix, increasing the structural rigidity of the deposited filament and restricting capillary-driven spreading. Using the optimized printing conditions and a photocurable silver ink with a Ag powder-to-photosensitive resin mass ratio of 4:1, the post-sintering line width was reduced from 269.8 to 72.57 μm, corresponding to a reduction of approximately 73%. After sintering at 800 °C, the printed tracks exhibited an electrical conductivity on the order of 107S/m, demonstrating that the substantial improvement in printing resolution was achieved without significantly compromising electrical performance. This in situ UV-assisted DIW strategy therefore provides an effective route for fabricating fine conductive features with improved dimensional fidelity and competitive electrical performance, showing promise for high-resolution flexible electronics and sensor applications.
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REACTIVE & FUNCTIONAL POLYMERS
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2026
·
IF 5.4
Yabo Wang,Junyan Yi,Dong Wang,Wenyi Zhou,Dongdong Yao,Decheng Feng,Zhongshi Pei
FTIR-derived BADGE conversion alone poorly predicts tensile strength. • Strength spans 19.1–44.7 MPa within 78–81% BADGE conversion. • Multi-response optimization balances front velocity, strength, and conversion. • UV settings tune ignition but have little effect on steady front velocity. • A thermochemical model verifies self-sustained curing beyond velocity fitting. UV-triggered radical-induced cationic frontal polymerization enables epoxy/oxetane thermosets to continue curing after brief UV exposure. However, formulations that support faster front propagation do not necessarily maximize tensile strength. We combined single-factor screening, central composite design, desirability optimization, and orthogonal UV experiments to examine the relations among formulation, process, and properties. In situ infrared thermography recorded front propagation. A thermochemical finite-element model described the thermal field. Across the formulation space, FTIR-derived BADGE conversion poorly predicted tensile strength. The single-variable model gave R 2 ≈ 0.08, while tensile strength ranged from 19.1 to 44.7 MPa as BADGE conversion ranged from 78% to 81%. The selected formulation yielded a front velocity of 51.6 mm·min −1 , a tensile strength of 37.7 MPa, and a BADGE conversion of 82.3%. All three results were within the prediction intervals. UV wavelength, irradiance, and exposure time affected tensile strength and BADGE conversion. The steady front velocity changed by less than 10%. The model reproduced continued propagation after UV removal and the axial cooling gradient. The thermochemical analysis supported self-sustained propagation. These results establish a composition-resolved multi-response strategy. Composition determines the attainable properties, while UV settings tune ignition. Download: Download high-res image (95KB) Download: Download full-size image
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JOURNAL OF MATERIALS SCIENCE
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2026
·
IF 4.4
Yuxuan Huang,Hongwei Lu,Shijia Yang,Weitao Su
High dielectric constant and high breakdown strength of nanodielectrics are difficult to achieve simultaneously, which is a challenge that must be faced in the current research, and a single-scale control strategy is difficult to solve the current problem. This study introduced hexafluorobutyl methacrylate (HFBMA) as a crosslinking modifier to prepare HFBMA/PVDF composite films by UV in situ crosslinking strategy. Through the study of multiscale control strategy, it was found that the FTIR results support the occurrence of UV-induced crosslinking, which is likely associated with the formation of a crosslinked network that restricts polymer-chain motion under high electric fields, inhibits the migration of molecular segments, significantly reduces the free-volume defects, and significantly increases the breakdown strength to 587.88 MV/m, which is 150% of PVDF (391.33 MV/m). The fluorinated side groups in HFBMA may contribute to deeper trapping states and charge-blocking effects because of their strong electronegativity, which is consistent with suppressed carrier migration and reduced space-charge injection, cutting conductivity loss and lowering the leakage current to 5.46 × 10 −7 A/cm 2 —one order of magnitude below that of pure PVDF. As a result, the energy storage density reaches 7.46 J/cm 3 , nearly double the value of PVDF. Graphical abstract
The alternative text for this image may have been generated using AI.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xuhui Zhang,Guangyao Ji,Mengying Gao,Jing Huang,Ting Li,Yang Wang,Shibo Wang,Weifu Dong
The realization of high stiffness, high extensibility, and multi-functions for polylactic acid (PLA) is a vital issue for its practical applications. Herein, hydroxyalkylated tannin acid (mTA), a phenolic compound-based modifier with plentiful flat aromatic structures and flexible isopropanol oligomers, is designed and fabricated to act as the multifunctional modifier for PLA. The mTA exhibits the capability of emitting fluorescence and blocking UV light due to the combination of flat aromatic structures and plentiful flexible chains. Besides, mTA with high grafting degree (h-mTA) shows an excellent compatibility to PLA due to the hydrogen bonding interface and the high affinity of grafted isopropanol oligomers to PLA. As a result, the as-prepared PLA/h-mTA20 composite exhibits a strikingly improved extensibility by 61.2 times while maintaining the high yield strength of PLA. Moreover, PLA/h-mTA can serve as a fluorescent material with multi-mode responsiveness as well as a UV-shielding material with high transparency. We envision that this work opens a novel yet facile way to prepare a strong, tough, and multifunctional PLA material with expanded application scopes and will promote the practical applications of phenolic compounds in polymers.
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Coatings
·
2023
·Vol. 13
·期 3
·498
·
IF 3.4
Weibiao Zhu,Yazhou Xu,Jinxin He,Xia Dong
Superhydrophobic coating with applicable transmittance was synthesized by simple UV-curable method which was likely suitable for large-scale production. The super-hydrophobicity was derived from the component containing modified polyhedral oligomeric silsesquioxanes which was chosen for low free energy and the potential to form hierarchical structure. The coating adhesion could reach the highest level by strip tape peel test. Compared to the UV-cured commercial coatings, the coating adhesion is enhanced by at least two levels. Super-hydrophobicity was preserved after long duration of water droplet impact, while water contact angle decreased slightly after sand impact due to partial damage of hierarchical structure. The coating can resist chemical corrosion by acid solution (HCl), base solution (NaOH) and salt solution (NaCl). The coating with water repellence function, adequate transmittance, and good mechanical and chemical stability is of great interest for practical outdoor applications.Keywords:coating;super-hydrophobicity;mechanical stability;chemical stability;polyhedral oligomeric silsesquioxanes component;polycarbonate
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危险品化学品经营许可证（带存储）